from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective chemistry Describing any rearrangement reaction in which single bonds are broken and others are formed


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  • B.P.; Chen, Y.C.J.; Walsh, C.: Allylic and pro - pargylic phenyl selenide oxygenation by cyclohexanone oxygenase: [2,3] - sigmatropic rearrangement of the enzyme-generated selenoxide.

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  • 183, 5268-5278 (2001) [6] Torres, R.A.; Bruice, T.C.: Theoretical investigation of the [1,2] - sigmatropic hydrogen migration in the mechanism of oxidation of

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